In three of your cases, the car ran into a pole or a tree — meaning the engine compartment was significantly deformed by the crash...which would be the mechanism for severing the engine and/or its mounts from the chassis.
In the 4th case, the car was t-boned by another car, traveling at a high rate of speed.
Refresh my memory; was the Georgia car rear-ended?
Harrison Deal’s car ran into the back end of a flat-bed truck carrying a load of steel. As I understand it, the collision was catastrophic, sending sections of the car into at least one other vehicle.
It wasn’t entirely clear at the time initial reports came out if Deal’s car had struck/swiped another car before hitting the truck or what the speed differential was between Deal’s car and the truck. There were a total of four vehicles involved with a number of very serious injuries reported.
Like many other other fatal accident, subsequent reporting just isn’t available because the media doesn’t care about it beyond the ‘if it bleeds, it leads’ aspect of the initial fatality. As I said to the other commenter, absent someone being arrested and tried for vehicular manslaughter (which seems unlikely as it was Deal who was probably the guilty party) or a civil suit, further reporting will likely not be done. The media just doesn’t care...exactly like how further reporting won’t be done on the fatal accident on the same road a couple days ago.